Boiler fire-box.



C. W. HULLI'NGS.

PATENTED MAR. 5, 190'7.`

BOILER .FIRE BOX.

APPLICATION FILED JULY 2s, 190s.

2 SHEETS-sum1.

fr? (lu/2am.

PATENTED MAR. 5, 1907.

eNo. 846,310.

C. W. HULLINGS. Boum FIRE B0X. APPLICATIOH` FILED JULY 23, 1906.

2 SHEETS-SHBET 2.

( attain,

CHARLES w. HULLINGS, or PHILADELPHTA, PENNSYLVANIA.

BQILER #mE-Box.

Specification of Letters Patent.

" Patented March 5, 197.

` Application nea :any 23,1906. serial No. 327,346.

To all whom it may concern:

Be it known that I, CHARLES W. HULLINGS, a citizen of the United States,and a resident of. Philadelphia, in the county v'of Philadelphia andState of Penns lvania, have made a certain new and usefu Invention inSteam-Boiler Fire-Boxes; and'I declare the following to be a full,clear, and exact description of the same, such as will-enable othersskilled in the art to which it appertains to make and use the invention,,reference being had to the accompanying drawings, and to letters or`figures of reference tives and similar engines; and it 'consists in"marked thereon, which form a part of this specification. Figure l is asection on the line 1 1, Fig. 2. Fig. 2 is a` transverse verticalsection of the linvention as applied on the line 2 2,' Fig. 1. Fig.` 3is a fragmentary front view of the invention as applied. r A

The invention has relation tosmoke-con suming fire-boxes for the boilersof locomothe novel construction and combinations of parts, ashereinaftery set forth. l

In the accompanying drawings, illustrating the invention, the letter adesignatesl the boiler, through which extend the draft-fines b from thefire-boxv c, which is bounded .on

Asis

the sides by the inner walls d of the lateral water-legs e e of theboiler, in front by the in` ner'wall f of the front Water-leg'g, and inrear by the inner wall h of the rear downward extension c of saidboiler. In the legs e and g and in the rear extensionlk, which formhollow walls of the fire-box, the water from the boiler is designedtocirculate. I

- The nre-box is provided with a grate mand in the rear wallabove thesame with an opening n, through which the fuel is designed to beintroduced into the fire-box.- This o ening is doorless, but is providedwith a. ringedV lateral edges of the upper arched baffler* sheet c andthe lateral edges of the lower versehollow forward and downward inclinedThe forward end of this bafller is baflier. closed, as'at u, and therear end is in communication with the rear downward extension k of theboiler through an, arched slot u in theinner wall thereof, to themargins of which the upper' and lower arched sheets of the baffler aresecured. The front orlower end of the arched retainer or baffier isclosed, as at w, except that it is provided with pipes z, extendinforward and downward to the forward water-leg g of the boiler, inside ofwhich said pipes are designed to` terminate.`

Extending upward and rearward over the forward 'portion of the bafflerand some distance past its end is-the deflecting or con suming arch 2,which is arallel, or nearly so, to the baffier, and consists of parallelsheets 3 and 4, the lateral edges of which are secured to the margins ofthe lateral inclined slots 5 and the forward arched ridges of which aresecured to the arched slot 6 in the inner wall of the forward water-legof the boiler. The upper or rear end portion ofthe defiector-arch 1sprovided with tubes 7,

which extend upward to the top sheet 8 of the fire-box, to which theyare secured and throughlwhichthey communicate with the water-chamber 9of the'boiler. rIhe inclined baffler constitutes, therefore, a transeptvor Vforward extension-chamber of the boiler, and

the inclined deflector is a rearward extensionchamber of the boiler,overlving by its rear end the forward end ofthe baffier, between whichand the rear end of the defiector is y boiler circulates freely and insuch Wise as to protect the baffier and deflector from undue injury onaccount of the heat.

The operation of these devices is as follows;`v

The fuel which is being consumed on thel grate is subject to air-draf tthrough the coalbed to provide oxygen for its combustion, n and to anair-'current through the draft-open` ing '11. over the fuel-bed. The.unconsumed cinders are-carried by this air-current forward around thefront end of the bafller and upward against the de ector, whereby theyvar@retarded and deileeted downward somewhat for further subjection tothe heat of the coal-bed by which lthey are consumed, the

Y gases being drawn through the reverting flue' ward extension of saiboiler, of a downward and forward inclined transverse' water-passa eattached to and communicating with sald lateral-water-legs and said reardown-1 ward extension, a parallel rearward and up- Ward4 lncllnedtransverse water-passage attached to and communicating with saidlateraland forward water-legs, and overlying the forward end of said downwardand forward inclined. water-passage, pipes connesting the frontendof thelatter water-y passage-to the forward water-leg, and pipes.

connecting the rear end of the former water-` passage t'o the boilerabove the fire-box, substantially as speciiid.

locomotive-boiler having in its fireb'ox, above the grate, areardownward-inclined arched water-passage attached to andIcommunieating laterally' and in rear with water-holding portions ofsaid boiler, and a front u ward-inclined arched waterfpassage, paralletothe irst-named passage, andv at# tached to" and communicating:laterally and in'front with water-holding portions of said boiler, thelast-named passage overlying the lirst-.namedpassage at orabout themiddle of the lire-box to'provide .a reverting-Hue, 'pipes connectin theunderlying passage te the front wateroldingportion of the boiler, andpipes connecting the overlying passage toa water-holding portion of theboiler over the {ire-box, said parts bein combined togethersubstantially as s eci ed. l

. In testimony whereof "aflix my signature in presence of two witnesses.

, CHARLES W. HULLINGS.

Witnesses:

CHAs. F. WALTER,

F. V. KAESTNER.

